IT956230B - Composizione di biossido di cromo ferromagnetico modificato e p oces so di preparazione - Google Patents

Composizione di biossido di cromo ferromagnetico modificato e p oces so di preparazione

Info

Publication number
IT956230B
IT956230B IT23466/72A IT2346672A IT956230B IT 956230 B IT956230 B IT 956230B IT 23466/72 A IT23466/72 A IT 23466/72A IT 2346672 A IT2346672 A IT 2346672A IT 956230 B IT956230 B IT 956230B
Authority
IT
Italy
Prior art keywords
oces
preparation
composition
modified ferromagnetic
chrome dioxide
Prior art date
Application number
IT23466/72A
Other languages
English (en)
Italian (it)
Inventor
G Basile
U Montiglio
P Aspes
Original Assignee
Montedison Spa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Montedison Spa filed Critical Montedison Spa
Priority to IT23466/72A priority Critical patent/IT956230B/it
Priority to US350033A priority patent/US3874923A/en
Priority to SE7305260A priority patent/SE389422B/xx
Priority to NL7305188A priority patent/NL158960C/xx
Priority to ZA732605A priority patent/ZA732605B/xx
Priority to AU54557/73A priority patent/AU469323B2/en
Priority to FR7313860A priority patent/FR2181888B1/fr
Priority to DE2319572A priority patent/DE2319572A1/de
Priority to CA169,929A priority patent/CA998240A/en
Priority to ES413927A priority patent/ES413927A1/es
Priority to AT353173A priority patent/AT340369B/de
Priority to GB1918673A priority patent/GB1426526A/en
Priority to SU731906422A priority patent/SU618032A3/ru
Priority to BE130243A priority patent/BE798513A/xx
Priority to CS2897A priority patent/CS177128B2/cs
Priority to DD170349A priority patent/DD104068A5/xx
Priority to JP48046034A priority patent/JPS5216718B2/ja
Application granted granted Critical
Publication of IT956230B publication Critical patent/IT956230B/it

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70636—CrO2
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • C01G37/027—Chromium dioxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/74—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by peak-intensities or a ratio thereof only
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
    • C01P2002/82—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by IR- or Raman-data
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C01P2006/82—Compositional purity water content

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Magnetic Record Carriers (AREA)
IT23466/72A 1972-04-22 1972-04-22 Composizione di biossido di cromo ferromagnetico modificato e p oces so di preparazione IT956230B (it)

Priority Applications (17)

Application Number Priority Date Filing Date Title
IT23466/72A IT956230B (it) 1972-04-22 1972-04-22 Composizione di biossido di cromo ferromagnetico modificato e p oces so di preparazione
US350033A US3874923A (en) 1972-04-22 1973-04-11 Modified ferromagnetic chromium dioxide composition and method of preparing the same
SE7305260A SE389422B (sv) 1972-04-22 1973-04-13 Ferromagnetisk komposition bestaende av modifierad ferromagnetisk kromdioxid samt sett att framstella densamma
NL7305188A NL158960C (cs) 1972-04-22 1973-04-13
ZA732605A ZA732605B (en) 1972-04-22 1973-04-16 Modified ferromagnetic chromium dioxide composition and process for its preparation
AU54557/73A AU469323B2 (en) 1972-04-22 1973-04-16 Modified ferromagnetic chromium dioxide composition and process for its preparation
FR7313860A FR2181888B1 (cs) 1972-04-22 1973-04-17
DE2319572A DE2319572A1 (de) 1972-04-22 1973-04-18 Modifiziertes ferromagnetisches chromdioxid enthaltendes gemisch und verfahren zu dessen herstellung
CA169,929A CA998240A (en) 1972-04-22 1973-04-19 Modified ferromagnetic chromium dioxide composition and method of preparing the same
ES413927A ES413927A1 (es) 1972-04-22 1973-04-19 Un procedimiento para obtener una composicion de dioxido decromo ferromagnetico modificado.
AT353173A AT340369B (de) 1972-04-22 1973-04-19 Verfahren zur herstellung einer modifizierten chromdioxidzusammensetzung
GB1918673A GB1426526A (en) 1972-04-22 1973-04-19 Ferromagnetic chromium dioxide composition and process for the preparation
SU731906422A SU618032A3 (ru) 1972-04-22 1973-04-20 Ферромагнитный материал
BE130243A BE798513A (fr) 1972-04-22 1973-04-20 Dioxyde de chrome ferromagnetique modifie et son procede de preparation
CS2897A CS177128B2 (cs) 1972-04-22 1973-04-20
DD170349A DD104068A5 (cs) 1972-04-22 1973-04-23
JP48046034A JPS5216718B2 (cs) 1972-04-22 1973-04-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT23466/72A IT956230B (it) 1972-04-22 1972-04-22 Composizione di biossido di cromo ferromagnetico modificato e p oces so di preparazione

Publications (1)

Publication Number Publication Date
IT956230B true IT956230B (it) 1973-10-10

Family

ID=11207341

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23466/72A IT956230B (it) 1972-04-22 1972-04-22 Composizione di biossido di cromo ferromagnetico modificato e p oces so di preparazione

Country Status (17)

Country Link
US (1) US3874923A (cs)
JP (1) JPS5216718B2 (cs)
AT (1) AT340369B (cs)
AU (1) AU469323B2 (cs)
BE (1) BE798513A (cs)
CA (1) CA998240A (cs)
CS (1) CS177128B2 (cs)
DD (1) DD104068A5 (cs)
DE (1) DE2319572A1 (cs)
ES (1) ES413927A1 (cs)
FR (1) FR2181888B1 (cs)
GB (1) GB1426526A (cs)
IT (1) IT956230B (cs)
NL (1) NL158960C (cs)
SE (1) SE389422B (cs)
SU (1) SU618032A3 (cs)
ZA (1) ZA732605B (cs)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128691A (en) * 1974-02-21 1978-12-05 Fuji Photo Film Co., Ltd. Process for the production of a magnetic recording medium
IT1012202B (it) * 1974-05-09 1977-03-10 Montedison Spa Procedimento per la produzione di biossido di cromo ferromagnetico
IT1045191B (it) * 1975-10-31 1980-05-10 Montedison Spa Procedimento per la produzione di biossido di cromo ferromagnetico
JPS5737780Y2 (cs) * 1977-09-09 1982-08-20
JPS54135416A (en) * 1978-04-12 1979-10-20 Kuninori Maruyama Portion material for roof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1467328B2 (de) * 1963-07-24 1971-06-16 Farbenfabriken Bayer AG, 5090 Le verkusen Ferromagnetisches modifiziertes chromdioxid
DE1771867B1 (de) * 1968-02-23 1972-02-03 Matsushita Electric Ind Co Ltd Tellur calcium modifiziertes chromdioxid
GB1312812A (en) * 1969-06-20 1973-04-11 Nippon Chemical Ind Process for preparing magnetic chromium dioxide
JPS4843436B1 (cs) * 1970-10-20 1973-12-18

Also Published As

Publication number Publication date
JPS4961089A (cs) 1974-06-13
BE798513A (fr) 1973-10-22
GB1426526A (en) 1976-03-03
CS177128B2 (cs) 1977-07-29
US3874923A (en) 1975-04-01
SU618032A3 (ru) 1978-07-30
JPS5216718B2 (cs) 1977-05-11
AU469323B2 (en) 1976-02-12
FR2181888B1 (cs) 1976-11-12
ZA732605B (en) 1974-03-27
DD104068A5 (cs) 1974-02-20
CA998240A (en) 1976-10-12
ES413927A1 (es) 1976-02-01
AT340369B (de) 1977-12-12
NL158960C (cs) 1979-05-15
DE2319572A1 (de) 1973-10-31
ATA353173A (de) 1977-04-15
SE389422B (sv) 1976-11-01
NL7305188A (cs) 1973-10-24
AU5455773A (en) 1974-10-17
FR2181888A1 (cs) 1973-12-07

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